Ethanol → HCID 18405027, compound

Participants

Reaction Steps

A solution of 3.2 g (10 mmol) of 4-(4-bromo-2,5-dimethyl-phenyl)-3,3-dimethyl4-oxo-butanoic acid in tetrahydrofuran is combined with 3.60 g (11 mmol) of carbonyldiimidazole and stirred for 1 hour at ambient temperature. The solvent is replaced by 20 ml of ethanol and the mixture is heated to boiling for 2 hours. Then the solvent is distilled off, the crude product is taken up in methylene chloride, washed with water, dried with sodium sulphate, concentrated and purified by flash chromatography (silica gel; ethyl acetate/petroleum ether=3:97).

Provenance & Evidence